moved recording/ -> recordings/; RecordingBlock -> Block; ProtocolRecording -> Recording; and all related api resources and db tables
moved experiment/ -> experiments/; and all related api resources and db tables
moved preparation/ -> preparations/; and all related api resources and db tables
moved stimulation/ -> stimulations/; StimulationType -> Type; MultiStimulus -> Multi; DGStimulus -> DG; SpikeStimulus -> Spike; and all related api resources and db tables
moved location/ -> locations/; and all related api resources and db tables